128371239

素因数分解:

$3^2\times {\mathrm{19}}^2\times {\mathrm{39511}}^1$

素因数の和:39555

約数の個数: 18

約数和(自身を含む): 195702936

約数和(自身を除く): 67331697

約数列:

[1, 3, 9, 19, 57, 171, 361, 1083, 3249, 39511, 118533, 355599, 750709, 2252127, 6756381, 14263471, 42790413, 128371239]

約数ペア:

[(1, 128371239), (3, 42790413), (9, 14263471), (19, 6756381), (57, 2252127), (171, 750709), (361, 355599), (1083, 118533), (3249, 39511)]